2022
DOI: 10.54021/seesv3n1-009
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Time variation of atmospheric pollutants in first weeks of COVID-19 lockdown in the Metropolitan Region of Rio de Janeiro

Abstract: This study aims to assess the COVID-19 partial lockdown influence on air quality in the Metropolitan Region Rio de Janeiro (MRRJ). Criteria pollutants (CO, SO2, O3, and NO2) sampled at four sites under vehicular and industrial influences were investigated, between March 1st to April 12th, 2019 and 2020. Results showed that the partial lockdown affected pollutant levels through emission sources reduction. High decreased concentrations were observed for SO2, NO2, and CO; while an increase in the ozone concentrat… Show more

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